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Heathkit HW-7

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Desktop Shortwave Transceiver

The Heathkit HW-7 was the first QRP transceiver offered by Heathkit. It was available from 1972 through 1975. The HW-7 provided coverage of 40, 20, 15 meter bands. The transceiver featured a very simple direct-conversion receiver design and this simple design led to performance problems including sometimes-severe broadcast-band interference, microphonics, and AC hum. According to the January, ARRL review (January, 1973), the original price of the HW-7 was about USD 70.

Specifications
Type
Desktop Amateur HF Transceiver 
Frequency range RX
15/20/40 m 
TX
15/20/40 m 
Frequency stability
less than 100 Hz drift after 10 minutes warmup 
Tuning steps
Filters
Receiver
Modulations
CW / SSB 
Sensitivity
less than 1 µV provides readable signal 
Selectivity
2 kHz (-6 dB) 
Receiver system
Direct conversion 
IF-frequencies
Image rejection
Audio output
Transmitter
Modulations
CW 
RF-output
40m: 3 W, 20m: 2.5 W, 15m: 2 W 
Connections
Antenna
BNC 
Impedance
50Ω 
Electrical
Power requirements
13V DC 
Current drain RX
35 mA 
TX
450 mA max 
Physical
Dimensions (w×h×d)
235 × 216 × 108 mm (9.25 × 8.50 × 4.25 in) including protrusions 
Weight
2.04 kg (4.5 lbs)  
Form factor
Desktop 
Manufactured
Between 1972 and 1975 in USA 
Other features
Memories
Usage
Amateur / Ham radio operators 
Manufacturer
Heathkit 
Model
HW-7
Features
 
Manuals, Diagrams and Brochures
 
None available  
 
 
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